Methods of using carbon quantum dots to enhance productivity of fluids from wells
US10280737B2 · kind B2 · utility
2Cited by
24References
24Claims
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Key dates
| Filing date | Jun 3, 2016 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jun 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V15/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Carbon quantum dots are used as tracers during the production of hydrocarbons. The tracer may be used to identify fluids produced from the reservoir. When used in the fracturing of multiple zones of the reservoir, qualitatively distinguishable carbon quantum dots may be used to identify the zone within the reservoir from which recovered fluid was produced. The carbon quantum dots may also be used in water flooding to determine water breakthrough in the production well. Upon water breakthrough in a production well, they may also be used to identify those injection wells from which breakthrough water originates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.